Major Infectious Diseases: degree of risk: very high ; food or waterborne diseases: bacterial diarrhea, hepatitis A and E, and typhoid fever ; vectorborne diseases: dengue fever, Japanese encephalitis, and malaria ; water contact disease: leptospirosis ; animal contact disease: rabies ; note: highly pathogenic H5N1 avian influenza has been identified in this country; it poses a negligible risk with extremely rare cases possible among US citizens who have close contact with birds (2013)